Definition of ratio in English:



  • 1The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

    ‘the ratio of men's jobs to women's is 8 to 1’
    • ‘We therefore estimated standardised hazard ratios.’
    • ‘Higher male mortality leads to decreasing male-female sex ratios as the population segment gets older.’
    • ‘In contrast, the Argentine central bank's reserve ratio ranged between 193 percent and 82 percent in 2001.’
    • ‘Measuring the isotopic ratios on Mars will provide clues about possible biological activity.’
    • ‘At MIT you learn about things like bandwidth, power, and signal-to-noise ratios.’
    • ‘The ratio varied in the range of 0 to 5.’
    • ‘A ratio higher than 1 in a product group is connected with a comparative advantage.’
    • ‘Multivariate logistic regression analysis was used to calculate the adjusted odds ratio of failure rates.’
    • ‘In addition, nitrogen metabolism increases the molar ratio of amino nitrogen released to filial tissues.’
    • ‘The bank's capital adequacy ratio remained at 11.72 per cent.’
    • ‘It is easier to see what is happening if we plot the ratios on a graph.’
    • ‘Aspect ratio is the ratio between the width of the tire and the height of its side wall.’
    • ‘The simplest model assumes the same ratio for all branches in a phylogeny.’
    • ‘We estimated hazard ratios by using Cox regression with age as the time metric.’
    • ‘Adjusted odds ratios were calculated by logistic regression, whereas adjusted risk ratios were calculated by generalized linear modeling.’
    • ‘The total chlorophyll/carotenoid molar ratio greatly decreased.’
    • ‘The control cross (uninfected male x uninfected female) yielded normal family sizes and female-biased sex ratios.’
    • ‘We next estimated the likelihood of the data under a unique ratio among all lineages.’
    • ‘The banks' non-performing loan ratio reached a record high of 8.09 percent in April 2002.’
    • ‘We have reported all standardised mortality ratios as ratios rather than percentages.’
    • ‘Twenty repeated scans were averaged to improve the signal-to-noise ratio in each recorded image.’
    proportion, comparative extent, comparative number, quantitative relation, correlation, relationship, correspondence, balance
    percentage, fraction, quotient
    View synonyms
    1. 1.1 The relative value of silver and gold in a bimetallic system of currency.


Mid 17th century: from Latin, literally reckoning from rat- reckoned from the verb reri.